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audio/softsynth/fmtowns_pc98/towns_pc98_driver.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef TOWNS_PC98_AUDIODRIVER_H
+#define TOWNS_PC98_AUDIODRIVER_H
+
+#include "audio/softsynth/fmtowns_pc98/pc98_audio.h"
+
+class TownsPC98_MusicChannel;
+class TownsPC98_MusicChannelSSG;
+class TownsPC98_SfxChannel;
+#ifndef DISABLE_PC98_RHYTHM_CHANNEL
+class TownsPC98_MusicChannelPCM;
+#endif
+
+class TownsPC98_AudioDriver : public PC98AudioPluginDriver {
+friend class TownsPC98_MusicChannel;
+friend class TownsPC98_MusicChannelSSG;
+friend class TownsPC98_SfxChannel;
+#ifndef DISABLE_PC98_RHYTHM_CHANNEL
+friend class TownsPC98_MusicChannelPCM;
+#endif
+public:
+	TownsPC98_AudioDriver(Audio::Mixer *mixer, EmuType type);
+	~TownsPC98_AudioDriver();
+
+	void loadMusicData(uint8 *data, bool loadPaused = false);
+	void loadSoundEffectData(uint8 *data, uint8 trackNum);
+	bool init();
+	void reset();
+
+	void fadeStep();
+
+	void pause();
+	void cont();
+
+	bool looping() const;
+	bool musicPlaying() const;
+
+	void setMusicVolume(int volume);
+	void setSoundEffectVolume(int volume);
+
+private:
+	uint8 readReg(uint8 part, uint8 reg);
+	void writeReg(uint8 part, uint8 reg, uint8 val);
+	void preventRegisterWrite(bool prevent);
+
+	void timerCallbackA();
+	void timerCallbackB();
+
+	void startSoundEffect();
+
+	void setMusicTempo(uint8 tempo);
+	void setSfxTempo(uint16 tempo);
+
+	TownsPC98_MusicChannel **_channels;
+	TownsPC98_MusicChannelSSG **_ssgChannels;
+	TownsPC98_SfxChannel **_sfxChannels;
+#ifndef DISABLE_PC98_RHYTHM_CHANNEL
+	TownsPC98_MusicChannelPCM *_rhythmChannel;
+#endif
+
+	uint8 *_musicBuffer;
+	uint8 *_sfxBuffer;
+	const uint8 *_patchData;
+
+	uint8 _updateChannelsFlag;
+	uint8 _updateSSGFlag;
+	uint8 _updateRhythmFlag;
+	uint8 _updateSfxFlag;
+	uint8 _finishedChannelsFlag;
+	uint8 _finishedSSGFlag;
+	uint8 _finishedRhythmFlag;
+	uint8 _finishedSfxFlag;
+
+	bool _musicPlaying;
+	bool _sfxPlaying;
+	uint8 _fading;
+	uint8 _looping;
+	uint32 _musicTickCounter;
+
+	int _sfxOffs;
+	uint8 *_sfxData;
+	uint16 _sfxOffsets[2];
+
+	uint8 *_trackPtr;
+	bool _regWriteProtect;
+
+	PC98AudioCore *_pc98a;
+
+	const int _numChanFM;
+	const int _numChanSSG;
+	const int _numChanRHY;
+
+	static const uint8 _channelPreset[36];
+	static const uint8 _levelPresetFMTOWNS[24];
+	static const uint8 _levelPresetPC98[24];
+	const uint8 *_levelPresets;
+
+	bool _ready;
+};
+
+#endif